Materials and Methods: Sixty cases aged between 40-80 years, who were admitted to ophthalmology clinic with several causes, enrolled to this cross-sectional study. Ocular and systemic examinations were performed for 30 patients with corneal arcus and 30 patients without corneal arcus. In ocular examination central corneal thickness (CCT), intraocular pressure (IOP), base curve (BC), anterior chamber depth (ACD), lens thickness (LT) and axial length (AL) were measured. As systemic parameters; the lipid profile, HbA1c, fasting blood glucose and body mass index were evaluated. Corneal arcus was defined as gray-white or yellow opacity seperated from limbus by a clear zone called lucid interval of Vogt using a slit lamp biomicroscope.

Results: When age, sex and the other factors were standardized, the patients with corneal arcus have higher intraocular pressure (15.9±2.3 and 14.4±2.5 mmHg, p:0.018), thinner central corneal thickness (528.5 and 544.5 μm, p:0.003) and thicker lenses (4.7 and 4.3 mm, p<0.001). As a systemic factor LDL levels are higher in arcus group (135.3 and 117.2, p:0.048).

Conclusion: Corneal arcus was associated with higher IOP, thinner CCT, thicker LT and higher LDL levels. We concluded that patients with corneal arcus were tend to have greater risk for glaucoma. Larger case series are required to find out the association between glaucoma and corneal arcus. Keywords : Central corneal thickness, intraocular pressure, base curve, lens thickness